Can't start plugin with PageBuilderService

[aas]

I've made servlet plugin for crowd with template and when I try to add js and css resources like described here https://developer.atlassian.com/server/confluence/web-resource-module/  plugin can't start with that error in logs

[INFO] [talledLocalContainer] 2021-05-19 12:25:37,553 QuickReload - Plugin Installer ERROR [plugin.osgi.factory.OsgiPlugin] Plugin 'com.example.crowd.plugin.crowdplugin2' never resolved service '&pageBuilderService' with filter '(&(objectClass=com.atlassian.webresource.api.assembler.PageBuilderService)(objectClass=com.atlassian.webresource.api.assembler.PageBuilderService))'
[INFO] [talledLocalContainer] 2021-05-19 12:25:37,553 FelixDispatchQueue INFO [osgi.container.felix.FelixOsgiContainerManager] Stopped bundle com.example.crowd.plugin.crowdplugin2 (70)

here is atlassian-plugin.xml 

<?xml version="1.0" encoding="UTF-8"?>
<atlassian-plugin key="${atlassian.plugin.key}" name="${project.name}" plugins-version="2">
  <plugin-info> 
    <description>${project.description}</description>  
    <version>${project.version}</version>  
    <vendor name="${project.organization.name}" url="${project.organization.url}"/>  
    <param name="plugin-icon">images/pluginIcon.png</param>  
    <param name="plugin-logo">images/pluginLogo.png</param> 
  </plugin-info>  
  <!-- add our i18n resource -->  
  <resource type="i18n" name="i18n" location="crowdplugin2"/>  
  <!-- add our web resources -->  
  <web-resource key="crowdplugin2-resources" name="crowdplugin2 Web Resources">
    <dependency>com.atlassian.auiplugin:ajs</dependency>  
    <resource type="download" name="crowdplugin2.css" location="/css/crowdplugin2.css"/>
    <resource type="download" name="crowdplugin2.js" location="/js/crowdplugin2.js"/>  
    <resource type="download" name="images/" location="/images"/>  
    <context>crowdplugin2</context> 
  </web-resource>  
  <web-item name="WebItem" i18n-name-key="web-item.name" key="web-item" section="topnav" weight="1000"> 
    <description key="web-item.description">The WebItem Plugin</description>  
    <label key="web-item.label"/>  
    <link linkId="web-item-link">http://localhost:4990/crowd/plugins/servlet/userblock</link>
  </web-item>  
  <servlet name="User Block" i18n-name-key="user-block.name" key="user-block" class="com.example.crowd.plugin.servlet.UserBlock"> 
    <description key="user-block.description">The User Block Plugin</description>  
    <url-pattern>/userblock</url-pattern> 
  </servlet>
</atlassian-plugin>

 here is servlet class:

import com.atlassian.plugin.spring.scanner.annotation.component.Scanned;
import com.atlassian.plugin.spring.scanner.annotation.imports.ComponentImport;
import com.atlassian.templaterenderer.TemplateRenderer;
import com.atlassian.webresource.api.assembler.PageBuilderService;
import javax.inject.Inject;

@Scanned
public class UserBlock extends HttpServlet {
@ComponentImport
 private final TemplateRenderer templateRenderer;
@ComponentImport
 private PageBuilderService pageBuilderService;
 private static final Logger log = LoggerFactory.getLogger(UserBlock.class);

@Inject
public UserBlock(TemplateRenderer templateRenderer, PageBuilderService pageBuilderService) {
   this.templateRenderer = templateRenderer;
   this.pageBuilderService = pageBuilderService;
}

@Override
 protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { 
    resp.setContentType("text/html");
    templateRenderer.render("template.vm", resp.getWriter());
    pageBuilderService.assembler().resources().requireWebResource("ru.ftc.crowd.plugin.crowdplugin2:crowdplugin2-resources");

 }
}

In pom.xml I have

<dependency>
    <groupId>com.atlassian.templaterenderer</groupId>
    <artifactId>atlassian-template-renderer-api</artifactId>
    <scope>provided</scope>
</dependency>
<dependency>
    <groupId>com.atlassian.plugins</groupId>
    <artifactId>atlassian-plugins-webresource-api</artifactId>
    <version>4.1.3</version>
</dependency>

When I remove PageBuilderService from servlet class, plugin starts and I my template renders. 

What should I do to add js and css to my template?

[Steffen Opel _Utoolity_]

Hi @aas

As just answered on your previous question, just in case other Crowd users stumble over this question here:

App development related questions like this are best asked in the Crowd Development category of the Atlassian Developer Community, you have a greater chance to get feedback from other app developers there.

That said, to set expectations, you'll note that there are comparatively few Crowd related questions and even less answers there - regardless, quite some Atlassian team members monitoring the community by now, so hopefully they can loop in someone from the Crowd team.

Cheers,

Steffen

[aas]

Hi @Steffen Opel _Utoolity_ 

Unfortunately I don't know how ask questions in Atlassian Developer Community, there no any buttons to create topic or ask questions. I can only read topics